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Overhead gantry

  • US 4,718,563 A
  • Filed: 10/17/1985
  • Issued: 01/12/1988
  • Est. Priority Date: 10/20/1984
  • Status: Expired due to Fees
First Claim
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1. A transportable overhead gantry for spanning a roadway, comprising:

  • two supports defining masts and one cross-member for carrying traffic signs, the supports being provided with lifting means for lifting and lowering the cross-member along the supports, the supports being foldable towards one another in a plane of the cross-member and the cross-member being telescopically retractable, whereby the gantry can be folded up with the cross-member lowered and transported on a truck, and further comprising a self-acting brake operable to fix the cross-member to the supports in the event of failure of the lifting means.

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